Field Tests
Ground Contact
 Field Decay Stakes |
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| Test Method:AWPA E7-93-Standard Method Of Evaluating
Wood Preservatives By Field Tests With Stakes. Field decay stake testing is the most comprehensive means for evaluating the efficacy of wood preservatives in wood under severe, or very severe ground contact conditions. Wood foundations, utility poles, building poles, and land or fresh water pilings may undergo similar exposures. Treated (and untreated) wood stakes are inserted half-way into the ground. At specified time intervals the stakes are removed and rated for severity of decay and insect damage. They are placed back into the ground after each rating until light bending pressure causes them to fail. |
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Depletion Rate Stakes |
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| Test Method:AWPA E7-93 (modified) Stake depletion rate testing evaluates the persistence of the wood preservative while under ground contact. Stake depletion rate specimens are inserted half-way into the ground. At specified intervals a number of specimens are removed from the field and analyzed for preservative content to determine the rate of preservative depletion. |
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| Rows of depletion stakes at our Hawaii field site. | |
Posts |
 Post specimens ready for internment in the field. |
